Ugb
[医][=undecalcified granulated bone]未脱钙（异体）骨颗粒
🗣️ 情景例句
How was it?
怎么样？
I'm sorry. I was just playing football with my friends.
对不起，我只是和朋友去踢了足球。
Between 1850 and 1910 the bison population is thought to have fallen from 60 million to just a few hundred.
人们认为，在1850年到1910年之间，野牛的头数从6，000万头降到只有几百头了。